<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2020/2/24
 * Time: 13:51
 */
use think\Loader;
class Refund {
    /**
     * 退款 * @param float $totalFee 订单金额 单位元
     * @param float $refundFee 退款金额 单位元
     * @param string $refundNo 退款单号
     * @param string $wxOrderNo 微信订单号
     * @param string $orderNo 商户订单号
     * @return string
     */
    public function doRefund($totalFee, $refundFee, $refundNo, $wxOrderNo='',$orderNo=''){
        $config = array(
            'mch_id' => '1577071131',
            'appid' => 'wxef9bd4e37eb130ab',
            'key' => '71ed921f74da0b04a253a26d17437d56',
        );
        $unified = array(
            'appid' => $config['appid'],
            'mch_id' => $config['mch_id'],
            'nonce_str' => self::createNonceStr(),
            'total_fee' => intval($totalFee * 100),    //订单金额  单位 转为分
            'refund_fee' => intval($refundFee * 100),    //退款金额 单位 转为分
            'transaction_id'=>$wxOrderNo,        //微信订单号
            'out_trade_no'=>$orderNo,    //商户订单号
            'out_refund_no'=>$refundNo,    //商户退款单号
            'refund_desc'=>'商品已售完',   //退款原因（选填）
        );
        $unified['sign'] = self::getSign($unified, $config['key']);


        $responseXml = $this->curlPost('https://api.mch.weixin.qq.com/secapi/pay/refund', self::arrayToXml($unified));

        $unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);
        if ($unifiedOrder === false) {
            die('parse xml error');
        }
        if ($unifiedOrder->result_code != 'SUCCESS') {
            die($unifiedOrder->err_code);
        }
        return true;
    }

    public static function curlGet($url = '', $options = array()){
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }

    public function curlPost($url = '', $postData = '', $options = array()){
        if (is_array($postData)) {
            $postData = http_build_query($postData);
        }
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        //第一种方法，cert 与 key 分别属于两个.pem文件
        //默认格式为PEM，可以注释
        curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'../extend/isWechatPayCert/apiclient_cert.pem');
        //默认格式为PEM，可以注释
        curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLKEY,getcwd().'../extend/isWechatPayCert/apiclient_key.pem');
        //第二种方式，两个文件合成一个.pem文件
        //    curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/all.pem');
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }

    public static function createNonceStr($length = 16){
        $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
        $str = '';
        for ($i = 0; $i < $length; $i++) {
            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }

    public static function arrayToXml($arr){
        $xml = "<xml>";
        foreach ($arr as $key=>$val)
        {
            if (is_numeric($val))
            {
                $xml.="<".$key.">".$val."</".$key.">";

            }
            else
                $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
        }
        $xml.="</xml>";
        return $xml;
    }

    public static function getSign($params, $key){
        ksort($params, SORT_STRING);
        $unSignParaString = self::formatQueryParaMap($params, false);
        $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
        return $signStr;

    }

    protected static function formatQueryParaMap($paraMap, $urlEncode = false) {
        $buff = ""; ksort($paraMap);
        foreach ($paraMap as $k => $v) {
            if (null != $v && "null" != $v) {
                if ($urlEncode) {
                    $v = urlencode($v);
                } $buff .= $k . "=" . $v . "&";
            }
        }
        $reqPar = '';
        if (strlen($buff) > 0) {
            $reqPar = substr($buff, 0, strlen($buff) - 1);
        }
        return $reqPar;
    }


    /**
     * 支付宝退货处理
     * 退货前提是必须支付成功
     * @param type $orderId
     * @return bool
     */
    public function alipayRefund($out_trade_no,$wepay_serial,$totalFee) {
        Loader::import('.alipay.aop.AopClient', '', '.php');
        Loader::import('.alipay.aop.request.AlipayTradeRefundRequest', '', '.php');
        Loader::import('.alipay.aop.SignData', '', '.php');
        $aop = new \AopClient ();
        $aop->gatewayUrl = config('alipay')['gatewayUrl'];
        $aop->appId = config('alipay')['appId'];
        $aop->rsaPrivateKey =config('alipay')['rsaPrivateKey'];
        $aop->alipayrsaPublicKey=config('alipay')['alipayrsaPublicKey'];
        $aop->apiVersion = '1.0';
        $aop->signType =config('alipay')['signType'];
        $aop->postCharset='UTF-8';
        $aop->format=config('alipay')['format'];
        $request = new \AlipayTradeRefundRequest();
        $bizcontent = json_encode([ 'out_trade_no'=>$out_trade_no, 'trade_no'=> $wepay_serial, 'refund_amount'=> $totalFee, 'refund_reason'=>'正常退款' ]);
        $request->setBizContent($bizcontent);
        $result = $aop->execute($request);
        $responseNode = str_replace(".", "_", $request->getApiMethodName()) . "_response";
        $resultCode = $result->$responseNode->code;
        return $resultCode;
    }


}